Evaluation of video detection systems, volume 1 : effects of configuration changes in the performance of video detection systems.

Details

• Creators:
  Medina, Juan C. ; Benekohal, Rahim F ; Chitturi, Madhav V.
• Corporate Creators:
  University of Illinois at Urbana-Champaign. Department of Civil and Environmental Engineering
• Corporate Contributors:
  Illinois. Department of Transportation. Bureau of Materials and Physical Research
• Subject/TRT Terms:
  • Digital video
  • Vehicle detectors
  • Detection and identification systems
  • Traffic surveillance Digital video
  • Traffic monitoring
  • Traffic safety
  • Vehicle detectors
• Publication/ Report Number:
  FHWA-ICT-08-024;ICT-08-024, UILU-ENG-2008-2012
• Resource Type:
  Tech Report
• Geographical Coverage:
  Illinois
• Corporate Publisher:
  Illinois Center for Transportation
• Abstract:
  The effects of modifying the configuration of three video detection (VD) systems (Iteris, Autoscope, and Peek) ; are evaluated in daytime and nighttime conditions. Four types of errors were used: false, missed, stuck-on, and ; dropped calls. The three VD systems were installed side-by-side at an intersection in Rantoul, IL. The ; configurations were modified by the vendors to improve their performance. The modifications to Peek VD ; configuration effectively reduced dropped calls at the stop bar zones; however, that was at the expense of ; increasing false calls during daytime and missed and false calls during night time. Similarly, in the advance ; zones, in both daytime and nighttime, there was a clear tradeoff between decreasing missed calls and ; increasing false calls. The modifications to Autoscope VD configuration did not provide a clear improvement at ; the stop bar zones during daytime; however, during nighttime, false calls increased and missed calls were ; eliminated. In the advance zones, the Autoscope changes significantly reduced missed calls in both day and ; night, reduced false calls in daytime, but increased in false calls during nighttime. The modifications to Iteris VD ; configuration were slight and overall effects of the changes were relatively small. This resulted in a tradeoff ; between false and missed calls. The results for three systems indicate that there are tradeoffs when the goal is ; to improve the overall performance of VD systems. Thus, after making modifications to the configuration of VD ; systems, the effects of these changes should be monitored not only for improvements on the previously ; detected errors, but also for potential new errors of a different type.
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• Format:
  PDF
• Funding:
  ICT- R-43
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16701/dot_16701_DS1.pdf
• File Type:
  [PDF - 856.63 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:123811a3bba8e32bc2b99c2253d1385c91069b99859f37098f30564595d295767b49cadaf1eb889c84a05e4aadb0af09f048a49f01f2e76cf2a052d34c473307